ANSI High voltage pin insulators
MAIN DIMESIONS AND STANDARD PARTICULARS
Class ANSI Mian Demension in (mm) leak-
age
Dist-
ance
in
(mm) 		Min.
Pin
Le-
ngth
in
(mm) 		Canti-lever Stre-ngth 1b(KN) Average
Flashover
Voltage		 Power
Freq-uae-ncy Pun-
cture Volt-age
KV 		Radio influence Voltage
D H d d1 h R1 R2 Power Freq-uency Critcal
Impulse		 Test Volt-age
To
Gro-
und
KV 		Max Riv
At
1M
Hz
V
Dry kv Wet kv Pos-itive kv Nag-ative kv
56-1 71/2
(191)		 53/4
(146)		 31/2
(89)		 11/2
(35)		 2
(51)		 3/4
(19)		 9/16
(14)		 13
(330)		 6
(152)		 2500
(11)		 95 60 150 190 130 15 100
56-2 9
(229)		 61/2
(165)		 4
(102)		 13/8
(35)		 2
(51)		 3/4
(19)		 9/16
(14)		 17
(432)		 7
(178)		 3000
(13.2)		 110 70 175 225 145 22 100
56-3 101/2
(167)		 71/2
(191)		 4
(102)		 13/8
(35)		 2
(51)		 3/4
(19)		 9/16
(14)		 21
(533)		 8
(203)		 3000
(13.2)		 125 80 200 265 165 30 200
56-4 12
(305)		 91/2
(241)		   13/8
(35)		 2
(51)		 3/4
(19)		 9/16
(14)		 27
(685)		 10
(254)		 3000
(13.2)		 140 95 225 310 185 30 200
56-5 131/2
(343)		 121/2
(318)		   13/8
(35)		 2
(51)		 3/4
(19)		 9/16
(14)		 34
(864)		 12
(305)		 3000
(13.2)		 175 125 270 340 225 44 200

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